Centrifugal liquid-separator.



N0. 857,794. PATENTED JUNE 25, l907.

. M. DECKER & G E. SHAW.

GENTRIFUGAL LIQUID SEPARATOR.

APPLICATION FILED 13110.3,1906.

4 SHEETS-SHEET l.

I No. 857,794. PATENTED JUNE 25, 1907.

M, DECKER & c. H. SHAW.

GENTRIPUGAL LIQUID SEPARATOR.

APPLICATION FILED 13120.3, 1906.

4 SHEETS-SHEET 2.

BIO/857,794.

' PKTEETEFJUEE 25, 1907. M. DEGREE & G H. SHAW UENTRIFUGAL LIQUID SEPARATQR. APPLIOATIOH mum 1730.3. 1906.

4 SHEETS-SHEET 3.

a PATENTED JUNE MQDECKER & G. H. SHAW. GENIRIFUGAL LIQUID SBPARATOE.

,LQPLIOATIOH FILED DEO.3.1906.

. 4 SHEETS-SHEET 4.

UNITED STATES ATENT orrron.

MORTON DECKER, OF CHICAGO, ILLINOIS, AND CHARLES H. SHAW,

()F MILXVA'UK'EE, lVlSCONSIN.

CENTRRFUGAL LlQUlD-SEPARATOR.

N0. essence.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed Dcoemberii, 1906. Serial No. 346,075,

To (all who/11. it 'lI'ML-Z/ cancer/1 Be it known that we, Monro DECKER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, and (mounts II. SHAW, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of W'isconsin, have invented certain new and useful Improvements in Centrifugal Liquid-Separators, of which the following is a specification, reference being had to the accompanying drawings.

Our invention relates to centrifugal liquid separators, and particularly to separators adapted to separate creai'n from milk.

The chicl. object of our invention is to provide a new and improved centrifugal separator which will et'l'ect a thorough and practically entire separation of the cream from the blue or skimmed milk readily, economically and rapidly, and which is of effective and simple construction.

Another object or our invention is to provide a new and improved connecting spindle between the driving mechanism of the sepa rator and the bowl which receives the milk.

Another object. of our invention relates to a new and improved. accelerator located within the bowl, which is adapted to efl ect the first separation of the cream from the milk, and also to accelerate the rotary movement of the milk after its first separation to thespeed of the bowl.

Another objectof our invention is to pro vide new and improved liners for such separaters, which are adapted to readily and surely etlect the linal and complete separation of the cream from the blue or skimmed milk.

Other objects of our invention areto improve such separators in sundry details hereinafter pointed out.

l n the lrawings,Figure 1 is a vertical section of the machine; Fig. 2 is an enlarged dctail of the bowl, showing the howl in central vertical section on line 2 2 of Fig. 5; Fig. 3 is an enlarged detail oi" the bowl and upper end of spindle. showing the bowl in vertical section on line 3 1; of Fig. 5; Fig. 1 is an en-. largod detail, being a vertical elevation of the central stanih rd with its upper end in vertical section; Fig. 5 is a top or plan view of the central standard shown in Fig. 4; Fig. 6 is an enlarged detail, being a top or plan view of one of the diskliners; Fig. 7 is an enlarged detail, being. a vertical section of one of.the disk-liners upon line 7-7 of Fig. 6; Fig. 8 is an enlarged detail, being a verticalsect-ion of the accelerator on line 8-8 of Fig. 9 Fig. 9 is an enlarged detail, being a top or Ian view of the accelerator; and Fig. 1() is" an enlarged detail, being a crossseetion on line 101O of-Fig. 3.

Referring to the drawings,11 is a standard, which is hollow, as is best shown in Fig.

1, to contain parts of the driving mechanism and rests upon a base 12.

13 indicates a sprocket-wheel, which is mounted upon a shaft 14 journaled in the standard 11 and adapted to be driven by a crank, or any other suitable means (not shownh 15 indicates a smaller sprocket-wheel mounted upon a shaft 16 which is journaled in the standard 11.

16 indicates a sprocket-chain connecting sprocket-wheels 13 and 14. v

17 indicates a gear, which is keyed, or otherwise secured, upon the shaft 16 and meshes with a pinion 18 keyed, or otherwise secured, to a shaft 19 which is journaled in the standard 11.

1 20 indicates a toothed wheel keyed, or otherwise secured, to the shaft 19.

21 indicates a spindle, the lower end of which rests in a bearing 22 in the standard 1 1.

23 indicates a Worm on the spindle 21 adapted to be engaged by the teeth upon the wheel 20.

24 indicates a cylindrical casing, which is secured to the standard 11 and is adapted to contain and support the rotating parts and other parts hereinafter described. As is best shown in Fig. 1, it is in the form of a hollow cylinder open at the top and whose interior is circular in cross-section.

25 indicates a bearing, which is mounted in a suitable opening in the bottom of the casing 24:, and in which the upper end of the spindle 21 is journaled.

26 indicates acollar on the spindle 21, preferably integral therewith. The collar 26 is small enough to pass through the opening in the bottom of the casing; 24, which supports the bearing 25, but is, of course, larger than the opening in the bearing 25, in which the spindle 21 is journaled, and is located immediately below the lower end of said bearing to resist any upward thrust on the spindle 21. The upper end of the spindle 21, as is best shown in Figs. 2 and 3, is provided with a tepered opening in which a tapered spindle of the bowl hereinafter described rests, and is also provided at its upper end, as is best shown in Figv 2, with a slot 27 which extends downward and thence laterally to afford a bearing for a pin on the spindle of the bowl hereinafter described. 7

28 indicates the bowl, which is cylindrical -in shape and whose hollow interior is circularin eross-sect1on, and consists of a side 29, bot-- torn 30 and top 31, as is best shown in Figs. 1, 2 and 3. As is best shown inthe same gures, the side portion 29 rests within upturned flanges of the bowl 28. The top 31 is provided with a peripheral flange 32, which is adapted to rest upon the top of the side 29, and with an interior annular projection33, which is adapted to rest and fit closely within the side 29. a frustuni of a cone, sloping'upward and inward to a head 34. The bottom of the bowl" is provided with a central .stud 36, which is provided with a central opening or cavity circular in crosssection and screw-threaded at its top.

36 indicates a standard, which is in the form of a tube having an expanded coneshaped base 37 and provided with a series of radial wings 38. 'One of these wings 38 is provided with a longitudinal centering edge 89 adapted to engage a corresponding notch in the disks hereinafter described. The lower conical-shaped end of the standard 36 rests upon the bottom 30 of the bowl 28, and is of such .a sizeasitoiextend completely across the bottom against a suitable annular ridge & formed on said bottom. The upper tubular portion of the standard extends up nearly to the top of the bowl, as is best shown in Figs. 1 2 and 3. The cone-shaped portion 3? or the standard is provided with two series (if-openings ib-42, as is best shown in Figs. 3 and The openings 41 are arranged upon an inner circle and openings 42 upon an outer circle on the cone-shaped por- .tion 37, and are arranged in pairs so that one open ng all and one opening 42 shall be on the same radiusv of. the circle, as is best shown in Figs. 4; and 5. The openings ll are. therefore, nearer the center and higher on the cone than the openings 42.

4f; indicatw an accelerator oi circular cios.-:socti m,somewhat smaller than the inol' the (one 37 and shown in detail in hand 9. and also in section and in poand The top 31 is in the shape of ssmee The upper edge of the accelerator beveled 7 to rest snugly and liquid-tight against the under surface of the cone 3'7 and is of such diameter that the beveled upper edge resting" against the under side oi the cone coines be- This accelerator is 6 tween the openings 41 and the openings 42 so as to se arate them from each other. The shape of t is inside cavity of the accelerator 43 corresponds to that of its outside, as is best shown in the sectional views of Figs. 2, 3

8. 43 indicates openings, preferably tour in number, and preferably in the form of semicircular notches in the bottom of the accelorator i3 and leading into the chamber formed between the exterior ofthe accelera" 3 tor 43 and the conical chamber formed by the bottom of the central standard 36. The upright portion 44 of the accelerator is provided with a series of openings d3, preferably four in number, and located between" Upon its upper surface the to pass through the head of the top 31 and 00 whose lower end is screw-threaded to engage the screwthreaded opening in the stud 35. The'upper end of the tube 47 18 provided with a circui'nierential shoulder 43 which .is adapted to bear upon the top of the head 34 105 todoclr the parts in position when put together, as hereinafter described.

ill indicates a pluralityof openings through the stud 35. These openings slope slightly upward from the interior to the exterior in no order to direct the milk, as hereinafter de "scribed.

1 50 indicates a slot, which passes upward into thehead 34 and whose inner surface is it is closed, however, when the parts 1 r open. are together, by the exterior of the standard 36, as best shown in Figs. 2 and 10. At its top this opening 50 communicates with a suitable opening at right angles to it in the head 34 into which is inserted a tube which is screwed into said opening by means of suitable screw-threads,-and whose position may be thereby adiusted to expose more or lcss of the slot 50.

52 indicates a plurality ably four in number, which are secured on the inside of the cover 3. 'lhesetubes at their lower end open into openings 53 in of tubes, 'preicrr less than half of a sphere and are formed of thin metal. Each of these disks 55 is provided at its lower edge with a horizontal tia'uge 56 and is provided with a central opening through which the tubular portion of the standard 36 extends when in position, as is host shownv in Figs. 6 and 7. This opening is provided with a plurality of notches 57,, which are adapted to fit closely over the wings on the standard 36, and one oi them is provided with a smaller notch 58 which-enthe narrow edge 39 for the purpose of centering the disks in proper position. The central opening of the disks is also provided with a plurality of radial extensions 58 which are preferably starpointedthat is to say, wider their inner ends and narrowing gradually to a rounded point at the outer. These radial openings 58 are the same in numher as the openings 42 and with them so that when the disks are in place the openings in. each of these disks will lie above and register with the openings 42 to afford a free passage upward of the milk, as hereinafter described. Each of the disks 55 is provided upon its upper surface with a stud or projection 59 which serves to separate it suitably from the disk immediately above it. The disks, has been said are curved and are so shaped that when placed in position, one upon the other, the space between them will gradually narrow from the upper and central portion toward the ed e of the disk between the flanges 56, and they are so shaped and spaced that the space between the flanges 5 6 is the same as the space between the disks at the central opei'iing.

60 indicates a tapered spindle formed upon the bottom: 30 of the bowl 28 and adapted to rest snugly within the tapered recess in the top of the spindle 2].

61 indicates a pin projecting from the spindle 60 near its upper end and adapted to engage the slot 27.

Referring to Fig. 1, 62 indicates a vessel having a cone-shaped bottom 63 adapted to rest upon the topo'f the casing 24. The coneshaped bottom is provided with suitable flanges 64 and 65 adapted to rest, respec tivcly, upon the top of the casing 24 and against the inside of the top of the casing to secure the vessel 62 in place. The conical bottom of the casing 63 is provided with an opening of suitable size to receive snugly within it the head 34 of the top of the bowl and encircles said top just below the screwtube 5].

66 indicates a second cylindrical vessel, which is provided with a sloping and slightly cone-shaped bottom 67 which is adapted to rest within the upper edge of the vessel 62. The bottom 67 is provided with a circular opening into which the upper portion of the head 34 of the bowl snug y rests and the edge of the opening just engages the surface of the head above the screw-tube 51. 68 indicates a vessel which rests within the uppeizportion of the vessel 66. The bottom 0f tl'ie'lvessel 68 is provided with an opening 7 within which rests the spindle 70 of a'lioat 71.. The edges of the opening are formed or pressed to form a short tube that will enter into the upper end of the milk tube 48. 7 2 indicates a tube, which leads out from the vessel 3 6'2, and 73 a tube which leads out from the vessel 66.

The parts are put together as follows: The accelerator 43 1s first placed in position on the bottom of the bowl, the top 31, of course, be- 3; ing removed.

7 The central tubular standard 36 is then placed in position in the bowl. The several disks or disk liners are then placed in position, one above the other, until the requisite number are inserted. The top 31 of 0 the bowl is then placed in position, the annular shoulder 33 pressing against the flange of the top disk and forcing all the parts into po sition. The milk-tube 47 is then inserted and screwed home.

ing upon the head 34 will force the top 31 downward into position, forcing the disks close together and by the pressure of the lowest disk upon the lower portion of the conical part 37 of the central standard .36

will look all the parts securely together. The bowl is then placed'in position in the casing, the taper spindle 6O entering the spindle 21 and the pin 61 engaging the slot 67. The

several vessels are then placed in position,

one above the other, as'described, and the device is ready for operation.

. The operation of the above-described machine as follows: The machine being setinto operation, whereby the bowl is rotated at a very high speed, milk is poured intothe vessel 68, which is kept filled with a constant supply. The milk passes down the milktube 47 and en'iorgcs through the openings if) at the bottom and, oi course, is set in rotation 1 15 as it GUIOI'QOS. The slight upward slope of the openings 49 throws the milk against the under surface of the accelerator 43, and being rotated rapidly the centrifugal l'orce operates to separate the milk from the cream to alarge 1 20 terior surface of the accelerator 43, passes :25

upward through the openings 41from whence it rises along the exterior of the central standard 36 to the top of the bowl to be ulti- The shoulder 48 bear- 95 inatcly discharged through the passage 50, as herein alter dcsc ribed. it is found that this part of the process removes about forty per cent. of the cream. The milk containing the other sixty percent. of cream passes through the chamber between the under side of the conical portion 3. ol: the upright standard. 36 and. the exterior of the accelerator, where, by the operation of the wings 45, it rotates with the full speed of the bowl. 'lhis ell'ects a still further separation ol' the milk and cream by the operati .-)n ol' centrifugal force. The heavier milk with still a small portion of the cream hugging the, interior surface of the conical portion 37 of the standard 36 passes upward and out through the openings 42. The cream of lesser specific gravity ilows upward along the exterior nrface of the accelerator,

and passing inward through the openings 43", joining the upward-flowing stream of cream separated from the milk inside of the accelerator, passes with it upward through the openings 41. The milk freed from most of the cream passing upward through the openings 4-2 into the bowl passes upward through the star-p0inted radial openings 58 in the several disks, which, it has been said, register with the openin s 41l2. As has been said, the cream whic i has been theretoiore freed from the milk rises in the bowl huggin the tubular portion of the central standard 36.

he milk freed oi almost all the cream is thrown outward by centrifugal forceinto the spaces between the disks and. flows downward so as to lili'those spaces. On account of the spaces between the disks narrowing to a very narrow opening" at their edges, the milk with the small percentage of cream still remaining in it is still further separated, the thin blue milk spreading outward passes from the -narrow spaces between the edges of the disks while the cream separated by centrifugal force from the milk rises along the upper surface of each disk, forced back by the constantly in ii owing stream of milk until it meets the ascending stream of cream previously separated, as above described. The milk, thus practicallycompletely freed from the cream, issues between the edges of the disks and is directed l) \},tl'l(lll&i1g(l5 upon the disks outward so that it readily flows upward and. does not by being lorccd downward, as would be the case il the llanges were not there, tend to resist the upward llow of skimmed milk. The stream of cream thus ll'owing upward, as above described, near the central portion of the bowl around the tubular portion of the standard 36 all passes upward through the tube .50, out through the screw-tube 51, into the vessel 62, from which. it is drawn out into a suitable receptacle through the tube 72. The. skimmed or blue milk thrown by 0911- triingal force to the exterior of the bowl passes upward through the tubes 52 and tubuscareclar openings 54 into the vessel 66, from which it is drawn oll through the spout .73 into any suitable receptacle.

Byreason of the cmstruction of thespindle 21, which is in a single piece and is iournaled in the removaljile bearing 25, together with the tapered spindle hi) on the bottom (it the bowl and the engaging slot and pin, it will be seen that a structure obtained which has only two bearings l'orthe shaft 31 and at the same time is capable of being readily and easily taken apart. The shoulder 26 on the spindle 21 holds the shaft against upward t irust. it will be seen thus that the bowl easily and readily removable ior cleansing and repairing the various parts, and by the removing of the IQl'llOVilblG hearing 25 the spindle itself may be easily and readily removed whenever it is desired to do so.

That which I claimas my invention and dc sire to secure by Letters Patent is,- i

l. in a centrifugal cream-separator, the combination with a bowl, a milk-tube, a conical chamber surrounding the lower end of said milk-tube and provided with two series of annularly-disposed openings, of a substantially bell shaped accelerator located within said conical chamber and provided with inilk discharge openings at its lower edge, cream passages near its upper portion,

and accelerating devices on its outer surface.

2. In a centrihigal cream-separator, the combination with a bowl, 9. millctube, a conical chamber surroundin the lower end of said milk-tube and provieed with two series of annularly-disposed openings, of a substan- W tially bell-she. ed accelerator WhOSC upper edge engages the inner surface of said conical chamber between said two series of openings and whose lower edge rests upon the bottom of the bowl, said accelerator being provided with milk discharge openings at its lower edge, cream passages near its upper portion, and accelerating devices on its outer surface.

3. In a centrifugal cream separator, tin combination with a bowl, a milk tube, and a conical chamber surrounding the lower end of: said milk tube and provided with a plural ity of annularly-disposed openings, of a substantially bell shaped accelerator locat jl within said conical chamber and provided with milk discharge openings at its lower edge, cream near its upper portion, and. accelerating devices on its outer surface, and a plurality of liner plates each provided with a central opening adapted to embrace said nilk tube and having a plurality of radial extensions to said central opening registering with the openings of said conical chamher.

4. In a centrifugal cream separator, the combination with a bowl, a milk tube, and a conical chamber surrounding the lower end of said milk tube and provided with a pluraledge, cream passages near its upper portion,

I of said central opening each registering with :0 subsfiantially bell-shaped accelerator located one pair of .the radially-disposed pairs 01' 1 within said conical chamber and provided I openings in said conical chamber.

with milk discharge openings at its lower-1 MORTON DECKER CHARLES H. SHAW.

it of radially-disposed pairs of openings, of a and accelerating devices on ii s outer surface, and a plurality of liner plates each having a. central opening aria ted to embrace said milk tube and a. plum ity of radial. extensions Witnesses:

CHARLES E. Fromm), WILLIAM H. DE BUSK. 

